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Qt-interest Archive, August 2006
[Qt4.2] Examples of Undo Framework?

• Subject: [Qt4.2] Examples of Undo Framework?
• From: Geoffrey Hutchison <geoff@xxxxxxxxxxxxxxxxxx>
• Date: Sat, 26 Aug 2006 09:19:39 -0400
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I'm still getting up to speed with Qt programming and have been using  
the Qt-4.2 preview, particularly because of the undo framework.

But I haven't found much in the way of example code for using  
QtUndoGroup. Am I missing this?

It looks like to properly implement the call to QUndoStack::setActive 
(), I should implement QWidget::changeEvent() and look for  
QEvent::ActivationChange?

An example of QUndoView would also be great -- the graphics in the  
documentation seem to imply an example with a drawing widget:
http://doc.trolltech.com/4.2/qundoview.html

Thanks in advance!
-Geoff

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